From: bobijam <bobijam>
Date: Wed, 4 Feb 2009 01:35:38 +0000 (+0000)
Subject:  Branch b1_6
X-Git-Tag: GIT_EPOCH_B1_6~2^5~207
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=40893a58b524020ebdaaeb911dce7eb522bd480f;p=fs%2Flustre-release.git

 Branch b1_6
b=18015
i=johann
i=sheng.yang

add SLAB_DESTROY_BY_RCU to ldlm_lock_slab's flags for ldlm_locks are freed
with RCU mechanism.
---

diff --git a/lustre/include/liblustre.h b/lustre/include/liblustre.h
index c3f9b53..d946166 100644
--- a/lustre/include/liblustre.h
+++ b/lustre/include/liblustre.h
@@ -379,6 +379,7 @@ typedef struct {
          int size;
 } kmem_cache_t;
 #define SLAB_HWCACHE_ALIGN 0
+#define SLAB_DESTROY_BY_RCU 0
 static inline kmem_cache_t *
 kmem_cache_create(const char *name, size_t objsize, size_t cdum,
                   unsigned long d,
@@ -902,10 +903,10 @@ void posix_acl_release(struct posix_acl *acl)
 }
 
 #ifdef LIBLUSTRE_POSIX_ACL
- #ifndef posix_acl_xattr_entry 
+ #ifndef posix_acl_xattr_entry
   #define posix_acl_xattr_entry xattr_acl_entry
  #endif
- #ifndef posix_acl_xattr_header 
+ #ifndef posix_acl_xattr_header
   #define posix_acl_xattr_header xattr_acl_header
  #endif
  #ifndef posix_acl_xattr_size
diff --git a/lustre/ldlm/ldlm_lockd.c b/lustre/ldlm/ldlm_lockd.c
index fd53bb8..aa7e870 100644
--- a/lustre/ldlm/ldlm_lockd.c
+++ b/lustre/ldlm/ldlm_lockd.c
@@ -1135,7 +1135,7 @@ existing_lock:
         if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT)
                 lock->l_req_extent = lock->l_policy_data.l_extent;
 
-        err = ldlm_lock_enqueue(obddev->obd_namespace, &lock, cookie, 
+        err = ldlm_lock_enqueue(obddev->obd_namespace, &lock, cookie,
                                 (int *)&flags);
         if (err)
                 GOTO(out, err);
@@ -1755,7 +1755,7 @@ static int ldlm_callback_handler(struct ptlrpc_request *req)
                 RETURN(0);
         }
 
-        if ((lock->l_flags & LDLM_FL_FAIL_LOC) && 
+        if ((lock->l_flags & LDLM_FL_FAIL_LOC) &&
             lustre_msg_get_opc(req->rq_reqmsg) == LDLM_BL_CALLBACK)
                 OBD_RACE(OBD_FAIL_LDLM_CP_BL_RACE);
 
@@ -1999,8 +1999,8 @@ static int ldlm_bl_thread_main(void *arg)
 
 #endif
 
-/* 
- * Export handle<->lock hash operations. 
+/*
+ * Export handle<->lock hash operations.
  */
 static unsigned
 ldlm_export_lock_hash(lustre_hash_t *lh, void *key, unsigned mask)
@@ -2316,8 +2316,8 @@ int __init ldlm_init(void)
                 return -ENOMEM;
 
         ldlm_lock_slab = cfs_mem_cache_create("ldlm_locks",
-                                           sizeof(struct ldlm_lock), 0,
-                                           SLAB_HWCACHE_ALIGN);
+                                      sizeof(struct ldlm_lock), 0,
+                                      SLAB_HWCACHE_ALIGN | SLAB_DESTROY_BY_RCU);
         if (ldlm_lock_slab == NULL) {
                 cfs_mem_cache_destroy(ldlm_resource_slab);
                 return -ENOMEM;